Waldemar Hummer's Avatar

Waldemar Hummer

@whummer

CTO @ LocalStack

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23.10.2024
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Latest posts by Waldemar Hummer @whummer

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LocalStack for AWS Is Moving to a Single Image. Here are Your Next Steps Starting March 23, 2026, LocalStack for AWS will ship as a single, unified container image requiring an auth token. This post explains what’s changing, what your options are, and how to migrate from…

LocalStack for AWS is moving to a single unified Docker image.

If you're currently using the community image, there are a few things you'll want to update before the transition.

This post walks through the next steps and what the change means for developers.

blog.localstack.cloud/localstack-s...

05.03.2026 16:45 👍 1 🔁 1 💬 0 📌 0
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AWS Deep Dives - Amazon SNS (Simple Notification Service) Amazon SNS (Simple Notification Service) is a fully managed publish-subscribe (pub/sub) messaging service that enables fan-out communication between applications and directly to end users.

SNS looks simple… until you actually architect with it 😅

New deep dive covers:

✨ Fan-out patterns
✨ Filtering strategies
✨ Real serverless use cases
✨ Testing locally with LocalStack

Worth a read if you're building event-driven systems.

👉🏾 blog.localstack.cloud/aws-deep-div...

03.03.2026 15:56 👍 2 🔁 1 💬 0 📌 0
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Announcing the LocalStack for AWS 4.14 Release LocalStack for AWS 4.14 introduces the new Resource Groups Tagging API provider, KRaft support for MSK, Glue as the default metastore for Hive, EKS IMDS integration, and enhancements across CloudForma...

🚀 LocalStack for AWS 4.14.0 is out!

What's new ▶️

🏷️ New Resource Groups Tagging provider
⚡ KRaft support for MSK
🗄️ Glue as default Hive metastore
☸️ EKS IMDS integration
🔄 Step Functions, S3, ECS, CloudFormation, Route 53 enhancements

Learn more 👇

blog.localstack.cloud/localstack-f...

26.02.2026 17:02 👍 1 🔁 1 💬 0 📌 0
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Harsh will introduce the TypeDB extension for LocalStack, which runs a fully functional TypeDB server inside your local AWS environment, and connects your application exactly as you would in production.

Join live here tomorrow: localstack.cloud/live

25.02.2026 18:18 👍 1 🔁 1 💬 0 📌 0
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AI agents are writing more code. Are your test environments keeping up?

Join Docker’s Michael Irwin and leaders from StrongDM, LocalStack, and WireMock to talk practical strategies for testing in the agentic era.

📅 Feb 26 | 11am ET
💻 Live virtual panel - register: https://bit.ly/4rvQtkG

24.02.2026 14:00 👍 3 🔁 1 💬 0 📌 0
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Introducing LocalStack Skills! 🎉

You can start using:

- localstack-lifecycle
- iac-deployment
- state-management
- logs-analysis
- iam-policy-analyzer
- localstack-extensions

To start, run: `npx skills add localstack/skills`

Feedback? Share here 👉 github.com/localstack/s...

23.02.2026 12:34 👍 3 🔁 1 💬 0 📌 0
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Excited to announce our next meetup with TypeDB! 🎉

🔹 Joshua will explain why Property Graphs aren't enough for complex domains & how TypeDB fixes that.
🔹 Harsh will demo the TypeDB extension for LocalStack to build & test graph apps locally.

RSVP 👉 www.meetup.com/localstack-c...

18.02.2026 16:06 👍 1 🔁 1 💬 0 📌 0
Your First Local AWS App in 4 Steps with LocalStack and Terraform
Your First Local AWS App in 4 Steps with LocalStack and Terraform Build your first AWS app locally in just four steps using LocalStack. In this video, we walk through starting LocalStack, configuring your auth token, deploying infrastructure with Terraform…

Ready to give LocalStack a try but not sure how to get started? Kiah will get you up and running in just minutes via 4 easy steps. By the end, you'll deploy a full application on your laptop using Terraform. Watch here 👉 www.youtube.com/watch?v=GvkX...

18.02.2026 16:26 👍 1 🔁 1 💬 0 📌 0
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Live Panel: The Future of Test Environments for Agentic Coding Join WireMock, Docker, LocalStack, and StrongDM for a live panel.

Join a live panel on February 26th at 11am ET (GTM -5) featuring CTOs & leaders from Docker, StrongDM, LocalStack and WireMock on the role of simulation, emulation, and digital twins in AI-augmented development. info.wiremock.io/live-panel-e...

17.02.2026 20:09 👍 2 🔁 1 💬 0 📌 0
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Announcing the LocalStack for Snowflake 1.7 Release LocalStack for Snowflake 1.7 expands Snowflake Scripting capabilities, adds new information_schema views, introduces several aggregate and bitwise functions, and delivers targeted parity updates for…


Snowflake scripting got more powerful with the release of LocalStack for Snowflake 1.7 ❄️

blog.localstack.cloud/localstack-f...

12.02.2026 12:26 👍 2 🔁 1 💬 1 📌 0
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Build Knowledge Graph Applications with LocalStack and TypeDB Extension Learn how to build knowledge graph applications with TypeDB extension for LocalStack. You'll learn how to install and use the extension with a sample application to understand the TypeDB schema, data…

Knowledge graphs, but make them local

This guide walks through building knowledge graph applications using LocalStack + TypeDB, all without touching the cloud.

Perfect for experimenting with complex data relationships
blog.localstack.cloud/build-knowle...

03.02.2026 14:18 👍 1 🔁 1 💬 0 📌 0
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Local Development & Testing with LocalStack & WireMock, Thu, Jan 29, 2026, 4:00 PM | Meetup Join our January meetup to explore how LocalStack and WireMock simplify local development and testing. Tom from WireMock will introduce hybrid API simulation with WireMock

It's not unusual for your AWS application to have 3rd/1st party dependencies on APIs, but this can really slow down development & testing. Join us tomorrow at 3pm GMT to see how the combo of LocalStack & WireMock solves these problems and increases your velocity. www.meetup.com/localstack-c...

28.01.2026 16:09 👍 1 🔁 1 💬 0 📌 0
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Local Development & Testing with LocalStack & WireMock, Thu, Jan 29, 2026, 8:30 PM | Meetup Join our January meetup to explore how LocalStack and WireMock simplify local development and testing. Tom from WireMock will introduce hybrid API simulation with WireMock

Join our January meetup to learn how to build a unified, local testing environment that handles both AWS services and external APIs. 💪🏿

Stop wrestling with cloud latency and complex dependencies. You deserve better!

www.meetup.com/localstack-c...

16.01.2026 12:16 👍 2 🔁 1 💬 1 📌 0
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Announcing the LocalStack for Snowflake 1.6 Release LocalStack for Snowflake 1.6 improves Iceberg integration for AWS S3 Tables and Polaris vended credentials, introduces new SQL functions, and delivers targeted parity updates.

LocalStack for Snowflake 1.6 is now available ❄️

It improves Iceberg integration for AWS S3 Tables and Polaris vended credentials, introduces new SQL functions, and delivers targeted parity updates.

blog.localstack.cloud/localstack-f...

13.01.2026 16:38 👍 2 🔁 1 💬 1 📌 0
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My first YouTube video is live! 🎥
It's about accelerating CloudFront development with LocalStack! 🪄

Anyone who's touched CloudFront knows the deployment wait times.
5 to 15 minutes every time you change a Lambda@Edge function or update a distribution setting.

09.01.2026 08:03 👍 1 🔁 1 💬 1 📌 0
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Automate Terraform testing with LocalStack & GitHub Actions Learn how to automate Terraform testing in GitHub Actions with LocalStack to validate modules without cloud costs or credentials. This tutorial shows how to set up CI workflows, run Terraform tests,…

If you’re using Terraform and GitHub Actions, this one’s for you 👀

Learn how to automate Terraform testing locally with LocalStack so your CI runs faster without touching real cloud resources.

📖 🔗https://blog.localstack.cloud/automate-terraform-testing-localstack-github-actions/

08.01.2026 18:44 👍 1 🔁 1 💬 1 📌 0

It lets you run a full CloudFront simulation right on your laptop.

In the video he covers:
1. Setting up localstack
2. Using Terraform with `tflocal`
3. Debugging functions instantly

This saves us hours of waiting time.

youtu.be/SnNAqBHDIgU

06.01.2026 15:29 👍 1 🔁 1 💬 0 📌 0
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The Road Ahead for LocalStack: Upcoming Changes to the Delivery of Our AWS Cloud Emulators We’re simplifying and improving the LocalStack for AWS experience by unifying Community and Pro into one image, offering a free account-based experience for individuals and open source users, and…

We shared an update on what’s next for LocalStack 👀

Unified AWS image, changes coming in March 2026, and clarity on what remains free for the community.

If LocalStack is part of your workflow, check it out 👇🏾

06.01.2026 14:24 👍 1 🔁 1 💬 0 📌 0
Getting started with the LocalStack Model Context Protocol (MCP) Server
Getting started with the LocalStack Model Context Protocol (MCP) Server YouTube video by LocalStack

What if your AI coding assistant could not only write infrastructure code, but also deploy it, test it, and fix issues automatically — all on your local machine?

That's exactly what the LocalStack MCP Server makes possible.

Learn more about it here 👉 youtu.be/9DLSr7fxNag

16.12.2025 17:12 👍 2 🔁 1 💬 0 📌 0
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Announcing the LocalStack for Snowflake 1.5 Release LocalStack for Snowflake 1.5 introduces new SQL string functions, enhanced support for Iceberg tables with CTAS, and targeted parity improvements for window functions, large timestamps, and stage file...

LocalStack for Snowflake 1.5 introduces new SQL functions, enhanced support for Iceberg tables with CTAS, and parity improvements for window functions, large timestamps, & stage file operations for better local Snowflake development.

Check it out here 👉 blog.localstack.cloud/localstack-f...

12.12.2025 09:36 👍 1 🔁 2 💬 0 📌 0
🎬 Day 4 at re:Invent: Wrapping Up, Winding Down
🎬 Day 4 at re:Invent: Wrapping Up, Winding Down That’s a wrap on re:Invent 2025! The LocalStack booth is packed. The team is exhausted. And our hearts? Very, very full. ❤️ This week we: -Met incredible customers who stopped by to share how they…

📹 Day 4 at re:Invent: Wrapping Up, Winding Down

That’s a wrap on re:Invent 2025!

The LocalStack booth is packed.

The team is exhausted.

And our hearts? Very, very full. 🫶🏿

www.youtube.com/watch?v=W-KF...

05.12.2025 10:51 👍 1 🔁 1 💬 1 📌 0

And we're on a roll... here's ANOTHER newly-announced AWS feature that LocalStack already supports. Thanks to our partnership with the AWS Step Functions team, you can use the new TestState enhancements with LocalStack! (AI = Already Implemented!)

#localstack #awsstepfunctions #ai

03.12.2025 16:42 👍 3 🔁 1 💬 0 📌 0
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The LocalStack team is LIVE at AWS re:Invent 2025!

We are absolutely buzzing to be here in Las Vegas this week! 🙌🏿

Day 1 at the Expo booth was an absolute blast. We captured all the energy and excitement in our latest YouTube video!

📍 Booth #1626
🔗 www.youtube.com/watch?v=O0Tz...

02.12.2025 13:47 👍 3 🔁 2 💬 1 📌 0
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Testing Locally with Lambda Managed Instances Lambda Managed Instances is a new capability in Lambda already supported in LocalStack that allows use of EC2 instances to maintain flexibility and predictability in allocating compute capacity.

AWS just launched Lambda Managed Instances and LocalStack already supports it. 💪🏿

This new Lambda capability lets you run functions on EC2 instances for more predictable cost, hardware choice, and tighter control over execution environments.

blog.localstack.cloud/testing-loca...

01.12.2025 13:16 👍 1 🔁 1 💬 1 📌 0
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Building Autonomous Software Systems with AI Agents and Telemetry, Tue, Nov 25, 2025, 3:00 PM | Meetup Join our session to explore how AI agents are enabling software systems that can detect, diagnose, and fix their own bugs autonomously. This event features two technical ta

Stop fixing bugs. Let AI Agents fix them for you.

Join us for a session on Autonomous Software Systems and learn how AI agents are using telemetry data to detect, diagnose, and fix production bugs without human intervention.

www.meetup.com/localstack-c...

12.11.2025 15:39 👍 2 🔁 1 💬 1 📌 0

📢LocalStack .NET Aspire Integration just hit its first stable release! 🎉

Highlights:
⚡ Eager service loading support (KUDOS @stu.dev)
🐳 Docker socket support (for Lambda containers)
🐛 Fixed Lambda + SQS "Invalid URL" bug

github.com/localstack-d...

27.10.2025 14:20 👍 3 🔁 2 💬 1 📌 0
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Develop, Test, and Break: LocalStack MCP and Chaos Engineering, Thu, Oct 30, 2025, 4:00 PM | Meetup Join our October meetup to explore how AI agents and chaos engineering are transforming local cloud development. This session features two hands-on talks that show you how

🤖💥 Develop, Test & Break

Join our October meetup to see how AI agents + chaos engineering are reshaping local cloud dev.

🧠 Harsh Mishra — LocalStack MCP Server
💣 Kiah Imani — Chaos Engineering 101

🎥 Tune In: www.meetup.com/localstack-c...

24.10.2025 15:39 👍 1 🔁 1 💬 0 📌 0
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Simulating AWS Outages Locally with Chaos Engineering When AWS goes down, will your app stay up? In this tutorial, we’ll use LocalStack’s Chaos API to simulate real-world AWS service outages including DynamoDB throttling, SQS 503 errors, and Lambda…

AWS outages are rare. But when they hit, they hit hard.

Can your app survive? Don’t guess.

Simulate real AWS service failures (like the Oct 2025 outage) using LocalStack and find out before production does.
Read the blog: blog.localstack.cloud/break-it-til...

23.10.2025 19:30 👍 2 🔁 2 💬 0 📌 1
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🎃 Still time to join #HacktoberFest with Localstack!
🧠 Docs, tutorials, sample apps, pick an issue & make your mark.
🎁 Swag still up for grabs!
🕓 We’re reviewing PRs daily, get yours in before Oct ends.

22.10.2025 13:59 👍 2 🔁 1 💬 1 📌 0
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AWS outage got you twiddling your thumbs?

LocalStack devs are still out here shipping. 😎

Emulate the cloud. Skip the downtime.

20.10.2025 19:11 👍 2 🔁 1 💬 0 📌 0